Results and Discussion
WTTCHT IXCNEEST AT'-TSI SUCCINiC A**HYDRIDE AND MsraLrtc Selr TRrerlterir
We used two kinds of cellulosic fabrics shorvn in Table I as original samples, and treated them rvith srtccinic anhydride and then with metallic salts under the conditions shorvn in Table II. The hydroxyl group of cellulose is succinoylated with succinic anhydride and produces a carboxyl group' Metal ion is introduced into succinoylated cellulose through that carboxyl group [18]- Weight increases after these treatments are also sholvn in Table II, and the sample codes appear in the left column. We evaluated the weight increases after each treatment. The weight atler the succinic anhydride treatment increased with ittcreasing concentration of reagent in the reaction medium. The relationship between fabric types and weight increase was not distinct. Metallic salt treatments were given to the -san:ples treated with succinic anhydride as well as the untreated samples. The weight increase after the metallic salt treatment depended on the degree of pretreatment with succinic anhydride. This effect was prominent for samples pretreated at the highest concentration (0.3 M) of succinic anhydride. The effect of pretleatrnent was not as clear at the concentration of 0.1 M. Axtts,{ctlrRIal- Acrlvirtrs Acetxsr S. tlttrelts exu K.pnt:wttottiae